Date Calculator
Calculate days between dates, add or subtract days from a date
What Is a Date Calculator?
A date calculator helps you find the number of days between two dates or calculate a new date by adding or subtracting days. It can include or exclude weekends for business day calculations, making it useful for project planning, deadlines, and scheduling.
How to Use
- Select the calculation type (Days Between Dates or Add/Subtract Days)
- Enter your dates based on the selected method
- Choose whether to include weekends
- Click "Calculate" to see your results
Examples
Days Between Dates
Start Date: January 1, 2025
End Date: February 15, 2025
Total Days: 45 days
Business Days: 32 days
Add Days to Date
Base Date: January 1, 2025
Days to Add: 30 days
New Date: January 31, 2025
Day of Week: Friday
Common Use Cases
Project Planning
Calculate deadlines and milestones with or without weekends.
Invoice Due Dates
Calculate net payment terms (Net 30, Net 60) using business days.
Age Calculation
Calculate exact age in days, months, or years.
Holiday Planning
Plan vacations by counting working days.
FAQs
What is the difference between total days and business days?
Total days include weekends and holidays. Business days only include Monday-Friday.
Does this account for leap years?
Yes, the calculation automatically accounts for leap years and varying month lengths.
How are weekends defined?
Weekends are Saturday and Sunday. For business days, these are excluded.